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DE68928744D1 - Vertical filtering method for raster-scanned display devices - Google Patents

Vertical filtering method for raster-scanned display devices

Info

Publication number
DE68928744D1
DE68928744D1 DE68928744T DE68928744T DE68928744D1 DE 68928744 D1 DE68928744 D1 DE 68928744D1 DE 68928744 T DE68928744 T DE 68928744T DE 68928744 T DE68928744 T DE 68928744T DE 68928744 D1 DE68928744 D1 DE 68928744D1
Authority
DE
Germany
Prior art keywords
pixel data
raster
planes
lines
plane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE68928744T
Other languages
German (de)
Other versions
DE68928744T2 (en
Inventor
Stephen G Perlman
Jerome M Okun
John H Palevich
James A Lundblad
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Apple Inc
Original Assignee
Apple Computer Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Apple Computer Inc filed Critical Apple Computer Inc
Publication of DE68928744D1 publication Critical patent/DE68928744D1/en
Application granted granted Critical
Publication of DE68928744T2 publication Critical patent/DE68928744T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/06—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows
    • G09G1/14—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows the beam tracing a pattern independent of the information to be displayed, this latter determining the parts of the pattern rendered respectively visible and invisible
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G09G5/39—Control of the bit-mapped memory
    • G09G5/395—Arrangements specially adapted for transferring the contents of the bit-mapped memory to the screen
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/20—Image enhancement or restoration using local operators
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0224—Details of interlacing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/12—Frame memory handling
    • G09G2360/123—Frame memory handling using interleaving
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • G09G5/06—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using colour palettes, e.g. look-up tables

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Image Processing (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Manipulator (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

The present invention relates to the field of raster-scanned video graphics apparatus having a buffer where pixel data is organized in planes such that the pixel data for a given pixel is stored with each of its bits in a different one of the planes. According to this invention, a method for providing filtered pixel data for a display stored in a first one of said planes is characterized in that it comprises the steps of:   reproducing the pixel data for the n, n+1, n+2 ... n-1, n+N lines of said first plane as the n+1, n+2, n+3 ... n+N+1 lines, respectively, of a second plane;   reproducing the pixel data for the n, n+1, n+2 ... n+N lines of said first plane as the n-1, n+2, n+1 ... n+N-1 lines, respectively, of a third plane;   scanning the pixel data from said first, second and third planes; and   convolving the pixel data as it is read from said buffer.
DE68928744T 1988-12-23 1989-12-08 Vertical filtering method for raster-scanned display devices Expired - Lifetime DE68928744T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/290,182 US5005011A (en) 1988-12-23 1988-12-23 Vertical filtering apparatus for raster scanned display

Publications (2)

Publication Number Publication Date
DE68928744D1 true DE68928744D1 (en) 1998-08-20
DE68928744T2 DE68928744T2 (en) 1999-02-11

Family

ID=23114877

Family Applications (5)

Application Number Title Priority Date Filing Date
DE68928744T Expired - Lifetime DE68928744T2 (en) 1988-12-23 1989-12-08 Vertical filtering method for raster-scanned display devices
DE68928773T Expired - Lifetime DE68928773T2 (en) 1988-12-23 1989-12-08 Vertical filtering method for raster-scanned display devices
DE68928923T Expired - Lifetime DE68928923T2 (en) 1988-12-23 1989-12-08 Method for vertically filtering a display scanned for a grid
DE893991534T Withdrawn DE3991534T1 (en) 1988-12-23 1989-12-08 VERTICAL FILTERING DEVICE FOR GRID SCAN DISPLAY
DE68926502T Expired - Lifetime DE68926502T2 (en) 1988-12-23 1989-12-08 UPPER FILTER DEVICE FOR DISPLAY SCANNED

Family Applications After (4)

Application Number Title Priority Date Filing Date
DE68928773T Expired - Lifetime DE68928773T2 (en) 1988-12-23 1989-12-08 Vertical filtering method for raster-scanned display devices
DE68928923T Expired - Lifetime DE68928923T2 (en) 1988-12-23 1989-12-08 Method for vertically filtering a display scanned for a grid
DE893991534T Withdrawn DE3991534T1 (en) 1988-12-23 1989-12-08 VERTICAL FILTERING DEVICE FOR GRID SCAN DISPLAY
DE68926502T Expired - Lifetime DE68926502T2 (en) 1988-12-23 1989-12-08 UPPER FILTER DEVICE FOR DISPLAY SCANNED

Country Status (12)

Country Link
US (1) US5005011A (en)
EP (4) EP0681281B1 (en)
JP (1) JP3081899B2 (en)
KR (1) KR0138991B1 (en)
AT (4) ATE169419T1 (en)
AU (1) AU4828390A (en)
CA (1) CA1320600C (en)
DE (5) DE68928744T2 (en)
GB (1) GB2233867B (en)
HK (3) HK1012457A1 (en)
NL (1) NL193229C (en)
WO (1) WO1990007767A1 (en)

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US5264838A (en) * 1991-08-29 1993-11-23 Honeywell Inc. Apparatus for generating an anti-aliased display image halo
JP2585957B2 (en) 1992-08-18 1997-02-26 富士通株式会社 Video data conversion processing device and information processing device having video data conversion device
GB9223492D0 (en) * 1992-11-10 1992-12-23 Display Research Lab Processing of signals for interlaced display
JPH07334669A (en) * 1994-06-07 1995-12-22 Matsushita Electric Ind Co Ltd Method and device for graphic processing
US5510843A (en) * 1994-09-30 1996-04-23 Cirrus Logic, Inc. Flicker reduction and size adjustment for video controller with interlaced video output
US5640532A (en) * 1994-10-14 1997-06-17 Compaq Computer Corporation Microprocessor cache memory way prediction based on the way of previous memory read
US5835948A (en) * 1994-10-14 1998-11-10 Compaq Computer Corporation Single bank, multiple way cache memory
US5838299A (en) * 1995-05-03 1998-11-17 Apple Computer, Inc. RGB/YUV video convolution system
US5748178A (en) * 1995-07-18 1998-05-05 Sybase, Inc. Digital video system and methods for efficient rendering of superimposed vector graphics
AU7435696A (en) * 1995-10-13 1997-04-30 Apple Computer, Inc. Method and apparatus for video scaling and convolution for displaying computer graphics on a conventional television monitor
US5996022A (en) 1996-06-03 1999-11-30 Webtv Networks, Inc. Transcoding data in a proxy computer prior to transmitting the audio data to a client
US5935207A (en) 1996-06-03 1999-08-10 Webtv Networks, Inc. Method and apparatus for providing remote site administrators with user hits on mirrored web sites
US6311197B2 (en) 1996-06-03 2001-10-30 Webtv Networks, Inc. Method for downloading a web page to a client for efficient display on a television screen
US6957260B1 (en) * 1996-06-03 2005-10-18 Microsoft Corporation Method of improving access to services provided by a plurality of remote service providers
US6034689A (en) * 1996-06-03 2000-03-07 Webtv Networks, Inc. Web browser allowing navigation between hypertext objects using remote control
US5918013A (en) 1996-06-03 1999-06-29 Webtv Networks, Inc. Method of transcoding documents in a network environment using a proxy server
US5862220A (en) * 1996-06-03 1999-01-19 Webtv Networks, Inc. Method and apparatus for using network address information to improve the performance of network transactions
US6473099B1 (en) * 1996-06-03 2002-10-29 Webtv Networks, Inc. Automatically upgrading software over a satellite link
US5896444A (en) 1996-06-03 1999-04-20 Webtv Networks, Inc. Method and apparatus for managing communications between a client and a server in a network
US5862339A (en) * 1996-07-09 1999-01-19 Webtv Networks, Inc. Client connects to an internet access provider using algorithm downloaded from a central server based upon client's desired criteria after disconnected from the server
US5745909A (en) 1996-07-09 1998-04-28 Webtv Networks, Inc. Method and apparatus for reducing flicker when displaying HTML images on a television monitor
US5838927A (en) * 1996-11-22 1998-11-17 Webtv Networks Method and apparatus for compressing a continuous, indistinct data stream
US6604242B1 (en) * 1998-05-18 2003-08-05 Liberate Technologies Combining television broadcast and personalized/interactive information
US5991799A (en) 1996-12-20 1999-11-23 Liberate Technologies Information retrieval system using an internet multiplexer to focus user selection
AU721232B2 (en) * 1997-01-24 2000-06-29 Canon Kabushiki Kaisha Scan line rendering of convolutions
AUPO478897A0 (en) 1997-01-24 1997-02-20 Canon Information Systems Research Australia Pty Ltd Scan line rendering of convolutions
KR19980080990A (en) * 1997-04-01 1998-11-25 랜스그리게인 Pixelated display method and device
US5963262A (en) * 1997-06-30 1999-10-05 Cirrus Logic, Inc. System and method for scaling images and reducing flicker in interlaced television images converted from non-interlaced computer graphics data
US6348978B1 (en) 1997-07-24 2002-02-19 Electronics For Imaging, Inc. Method and system for image format conversion
JP3758362B2 (en) * 1998-04-13 2006-03-22 コニカミノルタビジネステクノロジーズ株式会社 Image processing device
US6650327B1 (en) 1998-06-16 2003-11-18 Silicon Graphics, Inc. Display system having floating point rasterization and floating point framebuffering
US6501565B1 (en) * 1998-07-07 2002-12-31 Electronics For Imaging, Inc. Method and apparatus for smoothing text outlines
US6310697B1 (en) 1998-07-07 2001-10-30 Electronics For Imaging, Inc. Text enhancement system
AU3712300A (en) 1999-06-11 2001-01-02 Liberate Technologies Hierarchical open security information delegation and acquisition
US6570562B1 (en) * 2000-05-03 2003-05-27 Hewlett-Packard Development Company, L.P. Method for drawing patterned lines in a system supporting off-screen graphics
US6903753B1 (en) * 2000-10-31 2005-06-07 Microsoft Corporation Compositing images from multiple sources
US20020167612A1 (en) * 2001-04-02 2002-11-14 Pelco Device and method for reducing flicker in a video display
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Also Published As

Publication number Publication date
EP0681281A3 (en) 1995-12-06
EP0681281A2 (en) 1995-11-08
GB2233867B (en) 1993-09-08
DE68928923T2 (en) 1999-08-05
GB2233867A (en) 1991-01-16
KR0138991B1 (en) 1998-06-15
ATE169419T1 (en) 1998-08-15
NL8921391A (en) 1990-12-03
KR910700513A (en) 1991-03-15
US5005011A (en) 1991-04-02
EP0685829A1 (en) 1995-12-06
NL193229B (en) 1998-11-02
GB9017115D0 (en) 1990-09-19
DE68928744T2 (en) 1999-02-11
EP0681281B1 (en) 1998-08-05
EP0685829B1 (en) 1998-07-15
DE3991534T1 (en) 1991-04-04
DE68928773T2 (en) 1999-02-11
DE68928923D1 (en) 1999-03-11
EP0404911B1 (en) 1996-05-15
DE68926502D1 (en) 1996-06-20
EP0681280A2 (en) 1995-11-08
EP0404911A4 (en) 1992-09-09
EP0681280B1 (en) 1999-01-27
EP0404911A1 (en) 1991-01-02
ATE138216T1 (en) 1996-06-15
JPH03504171A (en) 1991-09-12
DE68928773D1 (en) 1998-09-10
ATE176353T1 (en) 1999-02-15
HK1013160A1 (en) 1999-08-13
WO1990007767A1 (en) 1990-07-12
EP0681280A3 (en) 1995-12-06
AU4828390A (en) 1990-08-01
HK1012457A1 (en) 1999-07-30
JP3081899B2 (en) 2000-08-28
NL193229C (en) 1999-03-03
DE68926502T2 (en) 1996-12-19
CA1320600C (en) 1993-07-20
HK1012458A1 (en) 1999-07-30
ATE168489T1 (en) 1998-08-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: APPLE INC., CUPERTINO, CALIF., US